Mercedes-Benz SL Mercedes-Benz SL 2015 Porsche 718 Cayman Porsche 718 Cayman 2017

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Mercedes-Benz SL vs. Porsche 718 Cayman Price Comparison (MSRP)

The sticker prices, before adjusting for remaining feature differences. Usually these are the numbers you will see on the window stickers.

Models in short supply often sell at or even above these prices.

Mercedes-Benz SL vs. Porsche 718 Cayman Invoice Comparison

Lowest Total Price: $101,745

Porsche 718 Cayman S   
Difference: $129,270

Calculate Payments

  Down Payment Interest Rate Term
Model Year20152017
ModelSL718 Cayman
TrimSL65 AMGS
Body2dr Hardtop conv.2dr Hatch
Base Price $215,250 $66,300
Painted brake calipers (optional) 1,000  
Wheels, dark finish 500 1,085
Ceramic brake rotors 8,950 7,400
Wood/leather-wrapped steering wheel 590 990
Wood trim 0 1,810
Performance meter 2,500  
Torque vectoring, brake-based   1,320
Adaptive sport seats plus   3,825
Sport Chrono Package   2,085
Premium Package Plus   3,170
Porsche Connect Plus   1,300
Navigation system   1,730
6-speed manual   0
Upholstered instrument panel, leather   2,160
Sport suspension (upgrade)   2,070
Synthetic suede headliner   1,180
Illuminated door sill trim plates   825
235/35ZR20   1,580
Blind spot warning system   690
Metal pedals   535
Voice control for nav and audio   0
Metallic paint (extra cost)   640
Painted brake calipers (optional) 930  
Wheels, dark finish 465 0
Ceramic brake rotors 8,324 0
Wood/leather-wrapped steering wheel 549 0
Wood trim 0 0
Performance meter 2,325  
Torque vectoring, brake-based   0
Adaptive sport seats plus   0
Sport Chrono Package   0
Premium Package Plus   0
Porsche Connect Plus   0
Navigation system   0
6-speed manual   0
Upholstered instrument panel, leather   0
Sport suspension (upgrade)   0
Synthetic suede headliner   0
Illuminated door sill trim plates   0
235/35ZR20   0
Blind spot warning system   0
Metal pedals   0
Voice control for nav and audio   0
Metallic paint (extra cost)   0
Options (change) 13,540 34,395
Options (change) 12,593 0
Destination 925 1,050
Gas Tax 1,300 0
Total Price $231,015 $101,745

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While we strive for accuracy, the site is not error-free, and prices can change at any time.

Dealer Price Quotes

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Request free, no-obligation Mercedes-Benz SL dealer quotes or Porsche 718 Cayman dealer quotes from dealers using our car quote form.

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TrueDelta Value Comparison: Mercedes-Benz SL vs. Porsche 718 Cayman

Lowest Adjusted Price and Invoice: Porsche 718 Cayman S
TrueDelta Adjusted Price Difference: $109,000
TrueDelta Adjusted Invoice Difference: $195,086
Model Year20152017
ModelSL718 Cayman
TrimSL65 AMGS
Body2dr Hardtop conv.2dr Hatch
Engine621hp V12350hp H4
TransmissionT7M6
DrivetrainRWDRWD
EPA Fuel Economy (city/highway)16/25 MPG20/26 MPG
Audio (watts, speakers)900, 12110, 6
Tire (rear if not all the same)255/35-19235/35-20
Total Price$231,015$101,745
Adjustments for Features-20,2700
Feature-Adjusted Total Price$210,745$101,745

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Features Comparison: Mercedes-Benz SL vs. Porsche 718 Cayman

Model Year20152017
ModelSL718 Cayman
TrimSL65 AMGS
Body2dr Hardtop conv.2dr Hatch
Transmission and Drivetrain 
7-speed manually-shiftable automatic$1200 
6-speed manual $150
RWD$0$0
Accessories 
Adaptive cruise control, all-speed$850 
Cruise control $150
Hands-free trunk or liftgate$100 
Heated steering wheel $100
Power door closers$300 
Power trunk closer$350 
Remote window/roof operation$15 
Semi-automated parking system$500 
Wind blocker, power small$300 
Brakes, Airbags, and Other Safety 
Active or whiplash-reducing head restraints, front seats$0 
Auto-raising roll bars / headrests$500 
Automatic braking, high-speed or partial$200 
Automatic braking, low-speed$200 
Blind spot collision prevention$150 
Driver drowsiness monitor$150 
Forward collision warning$200 
Lane departure prevention$150 
Lane departure warning$200 
Night vision$1750 
Radar- or camera-based collision preparation system$0 
Cargo Management 
Air-conditioned storage compartment$50 
Cargo net $40
Storage compartment under front seat(s)$50 
Climate Control 
Adaptive windshield washer system$0 
Water-repellent front-door glass $15
Wiper de-icer$25 
Drivetrain 
Electronically-variable engine mounts (performance-oriented) $500
Engine / Motor 
Mid-engine configuration $0
Raised top speed limiter$0 
Regenerative braking $0
Exterior 
Electronically-variable tint, sunroof or glass roof panel$2000 
Glass roof panel(s)$300 
Power retractable hardtop$6750 
Rear spoiler$200 
Retractable rear spoiler $400
Infotainment 
4G LTE connectivity $0
Apple CarPlay support $100
DVD-Audio-compatible player $0
DVD-compatible player$0 
Handwriting recognition $200
iPod integration$100 
Media drive$15 
Media drive, small $5
Off-road navigation system $0
SMS text-to-speech reader$25 
Surround sound$250 
Telematics service, such as OnStar $200
Telematics service, such as OnStar, with navigation$225 
Traffic + travel information$25 
Traffic information $25
USB port $25
Wi-Fi hotspot $50
Instruments, Lights, and Mirrors 
Auto-dimming headlights$200 
Auto-dimming passenger-side mirror $75
Cornering lights$50 
Fog lights$125 
Mirror tilt-down in reverse$25 
Turn signals on or near mirrors$25 
Seats and Interior Trim 
Automatic seat bolsters, driver$300 
Automatic seat bolsters, front passenger$300 
Leather headliner$1000 
Massage, driver seat$100 
Massage, passenger seat$100 
Memory system, passenger seat$150 
Neck-level heating, front seats$150 
Power headrest height adjuster, driver seat$50 
Power headrest height adjuster, passenger seat$50 
Power seatback bolsters, driver seat $100
Power seatback bolsters, passenger seat $100
Power thigh bolsters, driver seat $100
Power thigh bolsters, passenger seat $100
Synthetic suede headliner $650
Suspension, Wheels, and Tires 
Adaptive dampers - electrical $500
Adaptive hydraulic struts, auto-leveling and ht. adjustable$4000 
Transmission 
Steering-wheel-mounted transmission controls$100 
Total Value of Features$23,855$3,585
Value of Feature Adjustments$20,270$0
Value of Feature Adjustments-18,8650

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Specifications Comparison: Mercedes-Benz SL vs. Porsche 718 Cayman

Model Year20152017
ModelSL718 Cayman
Body2dr Hardtop conv.2dr Hatch
Wheelbase101.8 in97.4 in
Length181.8 in172.4 in
Width73.9 in70.9 in
Height51.8 in51.0 in
Curb Weight4,068 lb.2,988 lb.
Fuel Capacity19.8 gal.14.3 gal.
Row 1 Headroom39.1 in0.0 in
Row 1 Shoulder Room55.5 in0.0 in
Row 1 Legroom42.9 in0.0 in
Cargo Volume,
Minimum
8.5 ft315.0 ft3
Cargo Volume,
Maximum
13.5 ft315.0 ft3

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Option Package Details
Porsche 718 Cayman S

Torque vectoring, brake-based
FeatureValueRequested?
Torque vectoring, brake-based100Yes
Limited-slip rear differential300Yes
Total Requested400100%
Total Not Requested00%
Navigation system
FeatureValueRequested?
Navigation system600Yes
Off-road navigation system0No
Handwriting recognition200No
Total Requested60075%
Total Not Requested20025%
Upholstered instrument panel, leather
FeatureValueRequested?
Upholstered instrument panel, leather800Yes
Leather upholstery, extended coverage0No
Total Requested800100%
Total Not Requested00%
Sport suspension (upgrade)
FeatureValueRequested?
Sport suspension (upgrade)250Yes
Adaptive dampers - electrical500Yes
Total Requested750100%
Total Not Requested00%
Wood/leather-wrapped steering wheel
FeatureValueRequested?
Wood/leather-wrapped steering wheel150Yes
Audio controls on steering wheel125Yes
Heated steering wheel100No
Total Requested27573%
Total Not Requested10027%
235/35ZR20 tires
FeatureValueRequested?
235/35ZR20 tires200No
265/35ZR20 tires200No
Total Requested00%
Total Not Requested400100%
Adaptive sport seats plus
FeatureValueRequested?
Power thigh bolsters, driver seat100No
Power seatback bolsters, driver seat100Yes
Power thigh bolsters, passenger seat100No
Power seatback bolsters, passenger seat100Yes
Power thigh support length adjuster, passenger seat100Yes
Memory system, driver seat200Yes
Power height adjuster, passenger seat50Yes
Power tilt adjuster, passenger seat100Yes
Tilt/telescoping steering wheel, power100Yes
Power fore-aft adjuster, driver seat100Yes
Power height adjuster, driver seat50Yes
Power tilt adjuster, driver seat100Yes
Power 4-way lumbar adjuster, driver seat150Yes
Power thigh support length adjuster, driver seat100Yes
Power fore-aft adjuster, passenger seat100Yes
Power 4-way lumbar adjuster, passenger seat150Yes
Front sport buckets100Yes
Total Requested160089%
Total Not Requested20011%
Sport Chrono Package
FeatureValueRequested?
Chronometer100Yes
Electronic systems calibration selector200Yes
Performance meter150Yes
Electronically-variable engine mounts (performance-oriented)500No
Total Requested45047%
Total Not Requested50053%
Premium Package Plus
FeatureValueRequested?
Cooled or ventilated front seats300Yes
Proximity key250Yes
Perimeter approach lighting25No
Interior ambient lighting150Yes
Automatic climate control, front200Yes
Heated front seats200Yes
Dual-zone climate control125Yes
Residual heat50Yes
Automatic air recirculation100Yes
Auto-dimming rearview mirror150Yes
Rain-sensing wipers100Yes
Auto-dimming driver-side mirror75Yes
Auto-dimming passenger-side mirror75No
Steering-linked headlights150Yes
Headlight washers50Yes
Total Requested190095%
Total Not Requested1005%
Porsche Connect Plus
FeatureValueRequested?
Traffic information25Yes
In-vehicle Internet150Yes
Wi-Fi hotspot50No
4G LTE connectivity0No
Navigation map updates, three years0Yes
Telematics service, such as OnStar200Yes
App support0Yes
Remote app25Yes
Apple CarPlay support100No
Total Requested40073%
Total Not Requested15027%

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